Sourworm

The second generation of caterpillars of the crossed and the single-legged grape moth is called sourworm . The sour worm occurs in late July to early August and attacks the growing, still sour berries. The caterpillar is 10 to 12 millimeters in size in the single-rope grape moth and has a black head. The caterpillar of the crossed grape moth, on the other hand, is only 8 to 10 mm in size, with a yellow head and gray-green to green-brown color. The infestation can result in major damage through gray mold rot ( Botrytis cinerea ).

See also: hayworm , sweetworm

Web links

• www.rebschutzdienst.at

literature

• Jancis Robinson : The Oxford Wine Lexicon . Hallwag, Gräfe and Unzer, Munich 2006, ISBN 978-3-8338-0691-9 .
• Horst Diedrich Mohr (Hrsg.): Color atlas diseases, pests and beneficial insects on the grapevine . Eugen Ulmer, Stuttgart 2005, ISBN 3-8001-4148-5 .